In general, all expenses incurred in the course of business operations are deductible. Germany offers unilateral tax relief, allowing companies to credit foreign taxes paid up to the amount that is subject to domestic tax or to deduct foreign tax as a business expense. Net operating losses up to EUR 1 million can be carried back one year for corporation tax (for losses incurred between 2020-2023 the limit has been increased to EUR 10 million, in response to the COVID-19 crisis), but this provision does not apply to trade tax. Losses can be carried forward indefinitely and deducted up to a total income of EUR 1 million without limitation. For losses exceeding this amount, the excess can be deducted up to 60% of the total income. However, from 2024 to 2027, this limit is temporarily increased, allowing excess losses to be deducted up to 70% of the total income. Deduction of net interest expense is generally limited to 30% tax EBITDA.
Start-up and formation expenses are deductible. Bad debts incurred on business activity with unrelated parties are deductible if it is apparent that they are irrecoverable and all attempts to pursue the debt have failed or been abandoned.
Donations to charity organizations that respect certain parameters, whether in cash or in kind, are deductible up to the higher of 20% of otherwise net taxable income or 0.4% of the total of sales revenue and wages and salaries paid during the year.
Paid taxes are deductible, except for corporation tax, trade tax, and the VAT on most non-deductible expenses. Fines and penalties are not deductible. The deductibility of certain royalty payments to related parties has limitations. Payments to foreign affiliates can be deducted, provided the amounts are at "arm’s length".
According to the German Research Allowance Act (Forschungszulagengesetz), a tax-free subsidy of 25% of salaries and wages for certain R&D purposes shall be guaranteed up to a limit of EUR 1 million/year (until 30 June 2026). Furthermore, the maximum assessment basis for eligible expenses incurred after March 27, 2024, has been increased to EUR 10,000,000. This results in a maximum R&D allowance of EUR 2,500,000 per year, or EUR 3,500,000 for certain small and medium-sized enterprises.
The straight-line method is used to calculate depreciation for both movable and fixed assets, based on the asset's estimated useful life. A depreciation table (AfA-Tabelle) established by the Federal Ministry of Finance provides the specific depreciation period for each asset. Assets with a net value below EUR 800 can be fully depreciated right away. For movable assets acquired or produced between 2020 and 2022, a temporary accelerated depreciation method utilizing the declining balance approach has been introduced. The depreciation factor applicable under this method can reach up to 2.5 times the current depreciation rates but is limited to 25% annually. Furthermore, under the recent legislative changes in the Growth Opportunities Act of March 27, 2024, movable fixed assets acquired or manufactured between March 31, 2024, and January 1, 2025, may use the declining balance method for depreciation. This method allows for a depreciation rate of up to 20% per annum, with a maximum rate of twice the straight-line depreciation rate.